MESON Chess Problem Database

Problem Display
PID: 67841 (5QBb/3p2n1/1p6/pP1r3p/P1k2B1P/5N2/P1P5/n1KN4 w - - 0 1)

Stocchi, Ottavio

2nd Prize, Il Due Mosse, 1961-1962

5QBb/3p2n1/1p6/pP1r3p/P1k2B1P/5N2/P1P5/n1KN4

#2

11 + 9

5407 Selected Stocchi (II) 2004

SOLUTION

  • SOUND
  • Sets
    • 1...Sb3+
      • 2.axb3#
  • Tries
    • 1.Be3?
      • threat
        • 2.Sd2#
        • 2.Se5#
        • 2.Qf4#
      • 1...Sb3+
        • 2.axb3#
      • 1...Sxc2
        • 2.Se5#
      • 1...d6
        • 2.Qf4#
      • 1...Sf5
        • 2.Sd2#
      • 1...Se8
        • 2.Sd2#
      • 1...Se6!
    • 1.Be5?
      • threat
        • 2.Sb2#
        • 2.Se3#
        • 2.Sd2#
      • 1...Sb3+
        • 2.axb3#
      • 1...Sxc2
        • 2.Sb2#
      • 1...Sf5
        • 2.Sb2#
        • 2.Sd2#
      • 1...Se6
        • 2.Sb2#
        • 2.Se3#
      • 1...d6!
    • 1.Qa3?
      • threat
        • 2.Sb2#
        • 2.Se3#
        • 2.Qc3#
      • 1...Sb3+
        • 2.axb3#
      • 1...Sxc2
        • 2.Sb2#
        • 2.Qc3#
      • 1...Se6
        • 2.Se3#
      • 1...Se8
        • 2.Se3#
      • 1...Sf5!
  • Keys
    • 1.Bd2!
      • threat
        • 2.Sb2#
        • 2.Se3#
        • 2.Qc8#
      • 1...Sb3+
        • 2.axb3#
      • 1...Sxc2
        • 2.Sb2#
      • 1...d6
        • 2.Qc8#
      • 1...Sf5
        • 2.Qc8#
      • 1...Se6
        • 2.Se3#
      • 1...Se8
        • 2.Se3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • S(a);CHECK,OGATE::P(C),XS(a)
  • Tries
    • Try
      • B(G);
      • Threat
        • DUALS(3)
      • Vars
        • S(a);CHECK,OGATE::P(C),XS(a)
        • S(a);XP(D)::S(E)
        • P(g);::QAR(J)
        • S(h);::S(E)
      • Refutation
        • S(h);N_SPINR(d)
    • Try
      • B(G);
      • Threat
        • DUALS(3)
      • Vars
        • S(a);CHECK,OGATE::P(C),XS(a)
        • S(a);XP(D)::S(B)
      • Refutation
        • P(g);
    • Try
      • Q(J);
      • Threat
        • DUALS(3)
      • Vars
        • S(a);CHECK,OGATE::P(C),XS(a)
        • S(h);N_SPINR(d)::S(B)
        • S(h);::S(B)
      • Refutation
        • S(h);
  • Actual
    • B(G);
    • Threat
      • DUALS(3)
    • Vars
      • S(a);CHECK,OGATE::P(C),XS(a)
      • S(a);XP(D)::S(B)
      • P(g);::QAR(J)
      • S(h);::QAR(J)
      • S(h);N_SPINR(d)::S(B)
      • S(h);::S(B)
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